I have the same question here. But when I get sin(theta), I get something over 1. That is not possible. Is my equation wrong? Because I am very sure the units I've been using here are correct. I converted everything into meters.
the equation i used was:
maximum equation for multi-slit interference
d sin(theta)=m*lamda
d=distance between two slits
m=the interger called the order (bright spots)
theta=angular seperation
lamda=wavelength
but when i plugged in numbers, the sin(theta) i got was easily over 1...
Homework Statement
A diffraction grating of 3900 slits per centimeter is used to analyze the spectrum of mercury.
(a) Find the angular separation in the first-order spectrum of the two lines of wavelength 579 nm and 577 nm.
(b) How wide must the beam on the grating be for these lines to be...